Abstract
A new Mg-RE-Zn-Al alloy reinforced with the second phase of Mg12(RE) has been developed to enhance mechanical properties at the elevated temperatures. When the alloy solidifies with a relatively high cooling rate under the pressure applied, an extremely fine α-Mg phase with a completely closed network of the second phase of Mg12(RE) is developed. The reinforcing network restricts grain boundary sliding during deformation, resulting in a high yield strength of 150 MPa at 150 °C. Furthermore, the refined alloy exhibits around 27 % elongation to failure at 150 °C. This indicates that the failure behavior cannot be affected by the effects of residual stresses induced during solidification and stress concentrations developed near the second phase during deformation.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
S. Schumann and H. Friedrich, Mater. Sci. Forum 419–422, 51 (2001).
M. O. Pekguleryuz and A. A. Kaya, Adv. Eng. Mater. 5, 866 (2003).
K. Pettersen, H. Westengen, J. I. Skar, M. Videm, and L. Y. Wei, Magnesium Alloys and Their Applications (ed., K. U. Kainer), p. 29, Wiley-VCH, New York (2000).
G. Yuan, H. Kato, K. Amiya, and A. Inoue, J. Mater. Res. 20, 1278 (2005).
A. A. Luo, Int. Mater. Rev. 49, 13 (2004).
J. F. King, Magnesium Alloys and Their Applications (ed., K. U. Kainer), p. 15, Wiley-VCH, New York (2000).
I. P. Moreno, T. K. Nandy, J. W. Jones, J. E. Allison, and T. M. Pollock, Scripta mater. 45, 1423 (2001).
E. F. Emley, Principles of Magnesium Technology, p. 264, Pergamon Press, Oxford (1966).
L. L. Rokhlin, Magnesium Alloys Containing Rare Earth Metals: Structure and Properties, p. 135, Crc Press (2003).
S. K. Kim, M. G. Kim, T. W. Hong, H. K. Kim, and Y. J. Kim, Met. Mater. Int. 6, 275 (2000).
A. K. Jena and M. C. Chaturvedi, Phase Transformation in Materials, p. 105, Prentice Hall (1992).
M. C. Flemings, Solidification Processing, p. 295–395, McGraw-Hill (1974).
M. R. Ghomashchi and A. Vikhrov, J. Mater. Process. Tech. 101, 1 (2000).
F. R. de Boer, R. Boom, W. C. M. Matterns, A. R. Miedema, and A. K. Niessen, Cohesion in Metals, p. 6, Amsterdam, North-Holland (1989).
M. Pekguleryuz, P. Labelle, E. Baril, and D. Argo, 2003 Magnesium Technology, p. 201, TMS, San Diego (2003).
E. Aghion, B. Bronfin, H. Friedrich, S. Schumann, and F. von Buch, 2003 Magnesium Technology, p. 177, TMS, San Diego (2003).
G. M. Dieter, Mechanical Metallurgy, SI Metric ed., p. 93–95, McGraw-Hill (1988).
Y. Lu, Q. Wang, X. Zeng, W. Ding, C. Zhai, and Y. Zhu, Mater. Sci. Eng. A 278, 66 (2000).
T. H. Courtney, Mechanical Behavior of Materials, 2 nd ed., p. 420 McGraw-Hill, New York (2000).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Shin, B.S., Kwon, J.W. & Bae, D.H. Microstructure and deformation behavior of a Mg-RE-Zn-Al alloy reinforced with the network of a Mg-RE phase. Met. Mater. Int. 15, 203–207 (2009). https://doi.org/10.1007/s12540-009-0203-8
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12540-009-0203-8